Col. Michael C. Brice, 433rd Medical Group commander, presents the 433rd Aerospace Medicine Squadron guidon to newly promoted Col. Luis A. Berrios during an assumption of command ceremony at Joint Base San Antonio-Lackland, Texas, July 10, 2021. A tradition in military heritage, passing the unit’s flag from one person to another signifies transfer of command. (U.S. Air Force photo by Tech. Sgt. Iram Carmona)